USB PD is actually a USB charging standard, and USB PD is a USB quick charging standard.At present, there is no unified standard for Quick charging technology under android platform. All major manufacturers, such as quick-charge, VOOC flash Charge, SuperCharge, Dash Charge and turbine Quick Charge, have independently developed Quick charging technology. However, to achieve Quick charging, they need to use special wire provided by corresponding manufacturers, which indeed has a lot of inconvenience for consumers.To put an end to this mess, Google might try to change this mess by creating some rules on the android side.

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